The Keizur family arrived in the Willamette Valley in mid-November. They spent the winter in temporary quarters on the west bank of the Willamette River across from the
Methodist mission station at Mill Creek which had been established by
Jason Lee. In the spring of 1844, the family re-crossed the river and established a number claims on the west bank. The Keizur family land claims were north of the mission. In total, the adult members of the Keizur family claimed of farm land along the Willamette River. Thomas Keizur himself claimed . He filed his claim under the provisional government's original land act. His property was bordered on the west by the Willamette River. To the north his land ended at Cummings Lane, a road that was built by the Keizur family. The eastern boundary was River Road and then Cherry Avenue heading south to what is today Salem Industrial Drive. The southern boundary ran from the junction of Cherry Avenue and Salem Industrial Drive west to the river. After Oregon became a
United States territory, Keizur refiled his claim in accordance with the
Donation Land Claim Act of 1850. In 1844 the
Cockstock incident led to several deaths at
Willamette Falls near
Oregon City. After the deaths, a citizens committee of Willamette Valley residents met on 9 March 1844 to discuss forming a militia. The committee was chaired by W. H. Wilson with Keizur serving as the meeting secretary. The committee approved formation of a mounted rifle company to protect settlers. As a result, a militia company of 25 men, known as the
Oregon Rangers, was organized. Keizur was elected captain of the company. Keizur was duly commissioned by the executive committee of Oregon's provisional government. This was the first military unit authorized and formed in the Oregon Country. The company met several times for training, but was not called into action. In 1846, a special citizens meeting was held at the farm of
Daniel Waldo to discuss the need for a militia company. Keizur was elected chairman of the meeting. Attendees voted reestablish the Oregon Rangers mounted rifle company.
Charles Bennett was appointed captain of the company. After the meeting, 45 attendees volunteered to serve in the company. Keizur signed the meeting minute which were published in the
Oregon Spectator newspaper. During the 1851–1852 session of the
Oregon Territorial Legislature Keizur and two other citizen were appointed to a commission tasked with determining the route of a territorial road between
Lafayette in
Yamhill County to Salem in
Marion County. It appears that Keizur was unable to participate in the commission since records show that another citizen ended up serving in his place. When the proposed route was finally announced in 1853, Keizur and other Marion County residents signed a petition against building the road along the proposed route. As a result of the protest, the road was not built. Keizur's wife, Mary, died in 1853. == Legacy ==